Heart Smart is one of the largest privately owned Automated External Defibrillator AED companies in the industry.Heartsmart.com is one of the largest privately owned Automated External Defibrillator AED companies in the industry. For years, the company has led the market with its one stop shop strategy which provides clients with convenience and access to all major AED brands along with accommodating value added services. It is considered an elite distributor for manufacturers including Philips, ZOLL, Physio Control, Defibtech, Cardiac Science and HeartSine.